A 2nd-year high school student named Nyakouji Misato serves as a prosecutor in teen court. Although the cases she deals with have already been investigated, she teams up with Saburo, a boy in her class, to re-investigate until her own curiosity has been satisfied.

From her perspective as a high school girl, she notices things such as an odd use of emoji in an email, or an unnatural pose in a picture, leading her to discover the real truth behind each incident.